Malicious PDF — malware analysis report

Static analysis result for SHA-256 96bf0d62e09cebd4…

MALICIOUS

PDF

85.7 KB Created: 2021-06-29 02:09:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 6629567a7711f9960db4eacdf6cd6746 SHA-1: a7475d6f1cf3e942dbfa1c28c060562b21d14f78 SHA-256: 96bf0d62e09cebd4854993029d0e05ded5bb5c2edb389246b3e43be1af7ee000
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF file contains numerous links, many of which point to compromised WordPress installations, suggesting a link farm designed to distribute malicious content or lead users to phishing sites. The ClamAV detection and ML classifier strongly indicate malicious intent, likely related to phishing or malware distribution. No scripts were extracted, and the document body was unreadable, but the URL structure and heuristic firings are sufficient to assess the attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9860

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL http://www.miamiairportlimo.net/wp-content/plugins/formcraft/file-upload/server/content/files/160ac0467ac143---kifoxijapewurulop.pdf
    • https://primewestelectrical.com/wp-content/plugins/super-forms/uploads/php/files/d321002f320f0813cc342c427f6fbcf7/xegibajiroxivikomisuza.pdf
    • https://mednet.mk/public_html/upload/userfiles/file/22065403117.pdf
    • https://sayurhijau.com/contents//files/77847028429.pdf
    • https://angkortaxiservice.com/userfiles/file/97101000889.pdf
    • https://www.businesswatchguardingservices.co.uk/wp-content/plugins/super-forms/uploads/php/files/tlis3j6umrvkp4bjm4s62uegpd/15278303224.pdf
    • http://fabrykakonwersji.pl/wp-content/plugins/super-forms/uploads/php/files/d78c9c6a52490610a88431c58a7b1990/wenumubugor.pdf
    • http://www.tecnotrefg.it/wp-content/plugins/formcraft/file-upload/server/content/files/160acbb2c3d56e---43585032668.pdf
    • https://smarttactic.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160a76301851b7---23971238441.pdf
    • http://shinserviceodi.ru/wp-content/plugins/super-forms/uploads/php/files/2a976a29487c6bc522075e79610f54b7/bemarazemow.pdf
    • https://paperland.bg/uploads/file/20461370871.pdf
    • https://atlasautoglass.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609dd7f7db081---7540367308.pdf
    • http://diagonal.org.ar/wp-content/plugins/formcraft/file-upload/server/content/files/1608794cea0fba---pepovegubapowogeg.pdf
    • https://lightspec.com/wp-content/plugins/super-forms/uploads/php/files/0a0b165b61739e420340859b21cf00cf/30285220944.pdf
    • http://seventyfirstclassof69.com/clients/60772/File/rerafos.pdf
    • http://www.look4job.gr/images/_user_na/file/zikumogebinivuwa.pdf
    • https://grandplaza.bg/uploads/assets/file/97745015284.pdf
    • http://kirks-pool.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609af94bd1826---80301297660.pdf
    • https://tkpmission.org/wp-content/plugins/formcraft/file-upload/server/content/files/160be57e94874a---50561936110.pdf
    • http://acecaalcoy.com/userfiles/file/raxur.pdf
    • https://holzhaus-suedtirol.it/wp-content/plugins/formcraft/file-upload/server/content/files/160b90727c11c6---zapigalusodiraloxato.pdf
    • https://insights3.com/wp-content/plugins/super-forms/uploads/php/files/6c5c2cfd30155960d0d15c321febaec4/janurosinarox.pdf
    • http://autodilykanka.cz/cmsimple/images/file/fewokaguratiwexelilaj.pdf
    • https://smoothnomad.com/wp-content/plugins/super-forms/uploads/php/files/7f796gq6dl8eet8ttj24pm8eli/barup.pdf
    • https://home18.ru/wp-content/plugins/super-forms/uploads/php/files/08e356d00a452fc53a2a52755b9f35e1/minirimekisobapun.pdf
    • http://www.acefence.com/wp-content/plugins/formcraft/file-upload/server/content/files/16096210a5a08b---gogeki.pdf
    • https://feedproxy.google.com/~r/Uplcv/~3/GLLx1DTH0VQ/uplcv?utm_term=carol+dweck+and+growth+mindset
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ed29.bin
0715fcd91f5d3ffd8d603138c176ca777ecf4b7975cb18e454c79db6bef8ff04		 pdf-font-stream PDF embedded font (sfnt) at offset 0xED29 11024 bytes
font_01_sfnt_off00010676.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10676 16792 bytes
font_02_sfnt_off00011e88.bin
ae6b6562586e99307333b62a66fec4f61b83f1cd0b09dbf233338bbf9fa33a4a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11E88 16784 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.